Add check around pop of function expression scope in EndEmitFunction to match the check around the push in StartEmitFunction.
Add check around pop of function expression scope in EndEmitFunction to match the check around the push in StartEmitFunction.

Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore